Aldo didn't pop, but we also have no idea if that's because he kept delaying his tests or from whatever the Brazilian Commission did when they took over. The sample that was eventually received and tested by NSAC ended up clean sure, but there was so much fuckery leading up to it that it's basically worthless.
He'd have had NUMEROUS failures under USADA or Drug Free Sport's current rules for that incident. He'd have failed from the very start simply from when he was nowhere to be found for testing that first day, let alone everything that happened afterwards where he and his team kept interfering with the testing.